Button-facing machine.



w. E.. nAsBunN. BUTTON FAGING MACHINE.

(Application filed' '.Lpr. 13, l1898.)

3 Sheets-Sheet l.

(No Model.)

Ncnms vcrzns no. woamuov. wAsMINnYoN n c N0. 647,903. 0 W. E. NAGEBUBN.

BUTTON FAGING MACHINE.

(Application filed Apr. 13, 189B.)

Patented Apr.' I7, |900.

(ND Model.) 3 She'Bfs-She 2.

'Patented Apr. I7, |900.

sheets-sheet 3.

W. E. NAGEBUBN. BUTTON FACING MACHINE. (Application .led Apr. 13, 189B.)

(No Model.)

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"NITED STATES PATENT OFFICE.

VVILIIELM E. NAGEBORN, OF DETROIT, MICHIGAN, ASSIGNOR TO THE MONITOR BUTTONOOMPANY, OF SAME PLACE.

BUTTON-FACING MACHINE.`

SPECIFICATION forming part of Letters Patent'No. 647,903, dated April 17, 1900.

Application filed April 13 1898.

To a/ZZ whom, it moby concern:

Be it known that l, WILHELM E. NAGEBORN, a citizen of the United States, residing at Detroit, in the county of Wayne and State of Michigan, have invented certain new and useful Improvements in Button-Facing Machines, of which the following is a specification, reference being had therein to the accompanying drawings.

My invention consists in the means employed for maintaining the tool constantly in perfect condition for operating upon the work and producing uniform results therein, and more particularly in the means for holding the tool and for feeding and grinding it between operations.

The invention further consists in the peculiar combination, withsaid tool-holding means, of a work-carrier, and, further, inthe peculiar construction, arrangement, and combination of parts, as more fully hereinafter described and claimed.

In the drawings, Figure 1 is a side elevation of my machine. Fig. 2 is a plan view thereof. Fig. 3 is a rear elevation. Fig. 4f is a cross-section on line no x, Fig. l. Fig. 5 is a plan of the parts shown in Fig. 4. Fig. 6 is a longitudinal section, partly in elevation, through the tool-carrier. tion on line y y, Fig. It. Fig. 8 is a section Fig. 9 is a perspective View of the end of the tool and the button on which it is operating. i

Upon a suitable framework or table A is mounted the rotary head B, carrying a series of button-holdin g chucks C. As these chucks form no part of my present invention, I shall omit describing them in detail and will simplysay that the jaws of the chucks are adapted to hold the button-blanks and are spread to grasp or release said blanks by depressing Fig. 7 is a sec-` Serial No. 677,404. (No model.)

contact with all but one of said chuck-pulleys.

The head B is mounted upon a vertical spindle B', passing through the bearing A' on the frame A and having at its lower end a head provided with radial arms B2, corresponding in number to the chucks. The head B is intermittently turned through a partial rotation by a radial arm E, extending from a head on a horizontal shaft E and adapted to engage successively with the arms B2.

F is a spring-pressed dog having a V-shaped end adapted to engage with V-notches in the periphery of the head B to stop and hold said head in exact position after each partial rotation F is a rock-shaft journaled in standards on the frame, having the rock-arms F2 and F3 secured thereto and adapted to engage with and depress the ring a of two of the chucks, so as to spread the jaws thereof, and

- thereby release the finished button from one dog F in the downward movement of said pitman. y

The mechanism so far described forms no part of my present invention, which comprises the following construction and arrangement of parts:

G is a head secured to a spindle G', journaled in the standard A2 upon the frame in proximity to the head B. This head is provided with two tool-carriers arranged on diametrically-opposite sides thereof adapted in the rotation of said head to be carried over the third chuck of the head B. The head G is actuated by a gear-wheel G2, meshing with a gear-wheel B3 on the shaft B', which gears are so proportioned that each third of arevolution of the head B will cause a half-revolution of the head G.

H is a spring-pressed holding-dog similar to the stopping and holding dog F and engag- IOO 4sion of the springs t.

erases K y 4N forward on the ways O, carrying the grinding-wheel M across the end of the tool @,while the weight on the lever R will carry said 'grinding-wheel'back'again NThis reciprocation of the grinding-wheel will cause the grinding off of the end of the tool to whatever degree said tool has been fed downward in the rotation of the head.

The tool may be ground to any desired angle by properly adjusting the position of the grinding wheel. Thus if the wheel is adj usted backward and upward the tool will besharpened to a more acute angle, and if the wheel is adjusted forward and downward the angle of grinding will be more obtuse. These adjustments may be readily made by means of the adjusting-screws Z and P.

What I claim as my invention isy 1. In a button-facing machine, a feed for the tool comprising the spindle or shaft screwthreaded, a sleeve engaging therewith, a head having a screw-threaded engagement upon the sleeve, the threads upon the interior and exterior of the sleeve being of slightly-different pitch, the tool, the head being connected to the tool, and driving means for the sleeve.

2. In a button-facing machine, the combination with a revoluble head having an intermittent rotational movement and provided with a series of chucks, of a tool-holder having a complement-ary movement through a different orbit in a parallel plane, carrying a series of tools, means for registering a vtool with a chuck and causing the tool and button to contact and to separate after the button is faced and means for grinding the tool at an intermediate position in its movement.

3. In a button-facing machine, the combination with a revoluble head having an intermittent rotational movement, a series of chucks thereon, a tool-holder `having a complementary movement through a dierent orbit, a series of tools thereon, means for holding the tool-holder and the head stationary at the point where the tool and chuck are alined, means for rotating the chuck, means for causing the chuck to approach the tool and to recede therefrom after the blank is faced and means for grinding the tool at an intermediatc position of its movement.

4. In'a button-facing machine the combination with the tool and a grinder therefor, of a revolving head for carrying said tool alternately to its working and its grinding positions, and means for feeding the tool comprising a tool-head, a dierential screw connecting said tool and carrier heads and means for turning said screw slightly at each revolution of the carrier.

5. In a button-facing machine, the combi# nation with the tool, a grinder therefor and a rotary head for carrying said tool alternately to its workin g and itsgrindin g positions of feeding meansfor the tool comprising a central threaded shank on said carrier, a centrally-apertured tool-head surrounding said t shank, a sleeve having differential.interior and exterior screw-threads engaging respectively with said shank and toolhead,a ratchetwheel on said sleeve, a pawl-carried by said carrier-head, and a stationaryfinger or stop adapted to actuate said pawl in each rotation of the carrier.

6. In a button-machine the combination of the rotary tool-carrying head, tool-holding sleeves slidingly secured in bearings on diametrically-opposite sides of said head, a toolhead bearing on said sleeves and counteracting-springs on the sleeves, a central threaded spindle on the carrier-head,- a feed-'sleeve having differential interior and exterior screwthreads respectively engaging with said spindle and tool-head, ya ratchet-wheel on' said sleeve, a pawl carried by said carrier-head anda stationary stop or finger by which said pawl is adapted to be actuated in each rotation of the carrier. j

7. In a button-facing machine, the combination with the tool of a rotary head carrying work-holding chucks, a vertical spindle for said head having radial arms corresponding in number to the chucks, a variable-speed drive-shaft below said spindle carrying an arm thereon adapted to engage with said radial arms in the fast portion of the movement of the shaft, and a cam adapted to raise said spindle in the slow movement of the shaft for the purpose described.

8. A button-facing tool having an edge adapted to extend completely across the face of the button-blank and of similar contour on opposite sides of the center, one half of said edge forming a cutter and the other half a scraper.

In testimony whereof I affix my signature in presence of two witnesses.

. VILI-IELM E. NAGEBORN. Witnesses:

JAMES WHITTEMORE, OTTO F. BARTHEL. 

